KR102605019B1 - Manufacturing method of coating agent containing phosphorescent material with excellent phosphorescence effect - Google Patents

Abstract

The present invention relates to a method for manufacturing a coating containing a phosphorescent material with excellent phosphorescence effect, and more specifically, to a synthetic resin grinding step of pulverizing a synthetic resin into a particle size of 100 to 500 micrometers, and a synthetic resin produced through the synthetic resin grinding step. A raw material mixing step of mixing a phosphorescent pigment into powder, an extrusion step of extruding the mixture prepared through the raw material mixing step, a pulverizing step of pulverizing the extrudate extruded through the extrusion step, and a pulverized product pulverized through the pulverizing step. It consists of a coating agent mixing step of mixing with the coating agent.
The coating manufactured through the above process not only maintains the phosphorescent effect for a long time because the phosphorescent pigment is evenly dispersed in the synthetic resin and improves luminous efficiency, but can also be used on the floor or wall of a building, road sign, or road using a stencil or stamp method. It can be applied to guiding reflectors and climbing decks (stairs/bridges), etc., ensuring visibility at night through the phosphorescent effect and enabling the implementation of various designs.

Description

Manufacturing method of coating containing phosphorescent material with excellent phosphorescent effect {MANUFACTURING METHOD OF COATING AGENT CONTAINING PHOSPHORESCENT MATERIAL WITH EXCELLENT PHOSPHORESCENCE EFFECT}

The present invention relates to a method of manufacturing a coating containing a phosphorescent material with excellent phosphorescent effect. More specifically, the phosphorescent pigment is evenly dispersed in the synthetic resin to improve phosphorescent efficiency, so that the phosphorescent effect is not only maintained for a long time, but also maintains the phosphorescent effect for a long time. Through the stamping method, it can be applied to the floor or wall of a building, road signs, road guide reflectors, and climbing decks (stairs/bridges), etc. It is a phosphorescent effect that ensures visibility at night and allows various designs to be implemented. It relates to a method of manufacturing a coating agent containing an excellent phosphorescent material.

Recently, phosphorescent pigments (mineral properties) are mixed to produce phosphorescent stones or phosphorescent resins and are increasingly installed on floors or decks in amusement parks, lake parks, trails, lakes, etc. for aesthetic purposes.

However, the conventional phosphorescent stone or phosphorescent resin described above exhibits a luminous effect (brightness) when irradiated with ultraviolet rays, and after the ultraviolet rays are blocked, the phosphorescent effect disappears within a few minutes.

Due to the above problems, a method of maintaining the luminous effect of phosphorescent stones or phosphorescent resins used for landscaping or interior purposes is applied by irradiating a black lamp (UV lamp) to the phosphorescent stones at night. When applied, the installation space for axial vacancy or phosphorescent resin is limited, and not only does the black lamp itself not only look unappealing, but it is also undesirable in terms of energy efficiency and maintenance because it requires a continuous supply of electricity.

Recently, phosphorescent pigments with high brightness have been developed in various forms, but they are provided as expensive products that can only be used in specific industrial fields, making it difficult to apply them to general landscaping and interior design.

Korean Patent Registration No. 10-1431805 (2014.08.12) Korean Patent Registration No. 10-1689989 (2016.12.20)

The purpose of the present invention is to improve the phosphorescence efficiency by dispersing the phosphorescent pigment evenly in the synthetic resin, so that the phosphorescent effect is maintained for a long time, and the phosphorescent effect is maintained for a long time, as well as on the floor or wall of the building, road signs, road guide reflectors and the like through the stencil or stamping method. It provides a method of manufacturing a coating containing a phosphorescent material with excellent phosphorescence effect that can be applied to climbing decks (stairs/bridges), etc., ensuring visibility due to the phosphorescence effect at night and enabling the implementation of various designs.

The object of the present invention is a synthetic resin pulverizing step of pulverizing the synthetic resin into a particle size of 100 to 500 micrometers, a raw material mixing step of mixing a phosphorescent pigment with the synthetic resin powder produced through the synthetic resin pulverizing step, and a raw material mixing step manufactured through the raw material mixing step. An extrusion step of extruding the mixture, a pulverization step of pulverizing the extrudate extruded through the extrusion step, and a coating agent mixing step of mixing the pulverized product through the pulverization step with a coating agent. This is achieved by providing a method for producing a coating agent containing ash.

According to a preferred feature of the present invention, the synthetic resin is made of one selected from the group consisting of low-density polyethylene, polyethylene terephthalate, polymethyl methacrylate, and polycarbonate.

According to a more preferred feature of the present invention, the synthetic resin is made of polymethyl methacrylate.

According to a more preferred feature of the present invention, the raw material mixing step is performed by mixing 30 to 90% by weight of the synthetic resin powder prepared through the synthetic resin grinding step and 10 to 70% by weight of the phosphorescent pigment.

According to an even more preferred feature of the present invention, the extrusion step is performed using an extruder equipped with a twin screw with an L/D ratio of 25:1 or more.

According to an even more preferred feature of the present invention, the coating agent mixing step is performed by mixing 150 to 400 parts by weight of the coating agent with 100 parts by weight of the ground material pulverized through the pulverizing step.

According to an even more preferred feature of the present invention, the coating agent is composed of 100 parts by weight of non-yellowing acrylic, 30 to 45 parts by weight of xylene, and 7.5 to 15 parts by weight of 1-methoxy-2-propanolacetic acid.

According to an even more preferred feature of the present invention, between the extrusion step and the pulverizing step, an extrudate pulverizing step of pulverizing the extrudate extruded through the extrusion step, and a luminous pigment is added to the extrudate pulverized through the extrudate pulverizing step. A photoluminescent pigment mixing step of mixing and a second extrusion step of extruding the mixture prepared through the photoluminescent pigment mixing step are further performed.

In the method of manufacturing a coating containing a phosphorescent material with excellent phosphorescent effect according to the present invention, the phosphorescent pigment is evenly dispersed in the synthetic resin to improve phosphorescent efficiency, so not only is the phosphorescent effect maintained for a long time, but it is also used to maintain the phosphorescent effect on the building through the stencil or stamping method. It can be applied to floors, walls, road signs, road guide reflectors, and climbing decks (stairs/bridges), etc., and has an excellent effect in providing a coating that can realize various designs while ensuring visibility through the phosphorescent effect at night.

Figure 1 is a flowchart showing a method of manufacturing a coating agent containing a phosphorescent material with excellent phosphorescence effect according to an embodiment of the present invention.
Figure 2 is a flowchart showing a method of manufacturing a coating agent containing a phosphorescent material with excellent phosphorescence effect according to another embodiment of the present invention.

Below, preferred embodiments of the present invention and the physical properties of each component are described in detail, but are intended to be described in detail so that those skilled in the art can easily practice the invention. This does not mean that the technical idea and scope of the present invention are limited.

The method for producing a coating agent containing a phosphorescent material with excellent phosphorescence effect according to the present invention includes a synthetic resin pulverization step (S101) of pulverizing a synthetic resin into a particle size of 100 to 500 micrometers, and a synthetic resin powder manufactured through the synthetic resin pulverization step (S101). A raw material mixing step (S103) of mixing the phosphorescent pigment into the raw material mixing step (S103), an extrusion step (S105) of extruding the mixture prepared through the raw material mixing step (S103), and pulverizing the extrudate extruded through the extrusion step (S105). It consists of a step (S107) and a coating agent mixing step (S109) in which the pulverized product pulverized through the pulverizing step (S107) is mixed with a coating agent.

The synthetic resin grinding step (S101) is a step of putting synthetic resin pellets into a grinder and grinding them to a particle size of 100 to 500 micrometers. The synthetic resin powder pulverized to the above size has improved miscibility with phosphorescent pigments, making it a luminescent material. Because it is evenly distributed over the entire surface, it exhibits excellent luminous efficiency and serves to provide a phosphorescent material that maintains the phosphorescent effect for a long period of time.

If the particle size of the synthetic resin is less than 100 micrometers, the grinding process of the synthetic resin becomes complicated, agglomeration occurs between synthetic resin particles, and they easily scatter, reducing workability. If the particle size of the synthetic resin exceeds 500 micrometers, the workability is reduced. During the extrusion process using an extruder, the miscibility with the phosphorescent pigment decreases, reducing the time for which the phosphorescent effect is maintained.

At this time, the synthetic resin is preferably made of one selected from the group consisting of low-density polyethylene, polyethylene terephthalate, polymethyl methacrylate, and polycarbonate. If the physical properties of the phosphorescent material must be soft, it is preferable to use low-density polyethylene. When a phosphorescent material is required, it is preferable to use polyethylene terephthalate, polymethyl methacrylate, and polycarbonate. Considering light transmission, wear resistance, and hardness, it is best to use polymethyl methacrylate. desirable.

The raw material mixing step (S103) is a step of mixing a phosphorescent pigment with the synthetic resin powder produced through the synthetic resin grinding step (S101), and 30 to 90% by weight of the synthetic resin powder produced through the synthetic resin crushing step (S101) and phosphorescent pigment. It is made by mixing 10 to 70% by weight of pigment.

In the raw material mixing step (S103), if the content of the phosphorescent pigment is less than 10%, the phosphorescent effect of the manufactured phosphorescent material cannot be sufficiently exerted, and if the content of the phosphorescent pigment exceeds 70% by weight, the phosphorescent effect due to the phosphorescent pigment is The manufacturing cost increases without significant improvement, and the mechanical properties of the phosphorescent material deteriorate.

At this time, the photoluminescent pigment is not particularly limited as long as it is commonly used, and any kind can be used.

The extrusion step (S105) is a step of extruding the mixture prepared through the raw material mixing step (S103), and is performed by extruding the mixture prepared through the raw material mixing step (S103) with an extruder. At this time, the raw material mixing step (S103) is extruded. It is preferable to use an extruder equipped with a twin screw with an L/D ratio of 25:1 or more so that the phosphorescent pigment can be evenly dispersed in the synthetic resin, which is a component of the mixture prepared through step (S103).

In addition, the temperature applied to the extruder in the extrusion step (S105) varies depending on the type of synthetic resin used, from the raw material inlet (Feeding Zone) to the die (DIE) where the extruded resin is discharged. When low-density polyethylene is used, A heating temperature of 100°C to 180°C can be applied, when polymethyl methacrylate or polyethylene terephthalate is used, a heating temperature of 120°C to 260°C, and when polycarbonate is used, a heating temperature of 150°C to 300°C can be applied.

The crushing step (S107) is a step of crushing the extrudate extruded through the extrusion step (S105). After cooling the extrudate extruded through the extrusion step (S105), it is put into a crushing device and crushed to 0.01 to 0.3. It consists of a process of pulverizing to millimeter particle size.

The pulverized material pulverized to a particle size of 0.01 to 0.3 millimeters through the pulverizing step (S107) is evenly mixed with the coating agent mixed through the coating agent mixing step (S109) to provide a coating agent that exhibits a uniform phosphorescent effect. .

At this time, if the particle size of the pulverized product is less than 0.01 millimeter, not only is the pulverizing process complicated, but also easily scatters, lowering workability, and agglomeration may occur in the process of mixing with the coating agent, and the particle size of the pulverized product is If it exceeds 0.3 millimeters, not only will it not be evenly mixed with the coating agent components, but the overall specific surface area will decrease, resulting in a decrease in phosphorescent area, which may lower the phosphorescence effect.

The coating agent mixing step (S109) is a step of mixing the pulverized material pulverized through the pulverizing step (S107) with a coating agent, and 150 to 400 parts by weight of coating agent is added to 100 parts by weight of the pulverized material pulverized through the pulverizing step (S107). It is made by mixing. If the content of the coating agent is less than 150 parts by weight, the viscosity of the coating agent containing the phosphorescent material with excellent phosphorescent effect increases too much, making it difficult to apply to the stencil method. If the content of the coating agent exceeds 400 parts by weight, the phosphorescence occurs. The phosphorescent effect may be reduced if the content of the effective phosphorescent material is too low.

At this time, the coating agent is preferably composed of 100 parts by weight of non-yellowing acrylic, 30 to 45 parts by weight of xylene, and 7.5 to 15 parts by weight of 1-methoxy-2-propanol acetic acid.

In addition, between the extrusion step (S105) and the pulverizing step (S107), an extrudate pulverization step (S106) of pulverizing the extrudate extruded through the extrusion step (S105), and an extrudate pulverization step (S106) are performed. The phosphorescent pigment mixing step (S106-1) of mixing the phosphorescent pigment into the pulverized extrudate and the second extrusion step (S106-2) of extruding the mixture prepared through the phosphorescent pigment mixing step (S106-1) will further proceed. In addition, if the phosphorescent pigment is further mixed with the extruded product through the extrusion step (S105) through the above process, a phosphorescent material with further improved phosphorescence effect can be provided.

At this time, in the extrudate grinding step (S106), the extrudate extruded through the extrusion step (S105) is cut into 3 to 4 millimeter lengths, cooled, and processed into pellets, then placed in a grinder and crushed to a size of 100 to 500 micrometers. It is made by grinding to a particle size of .

The phosphorescent pigment mixing step (S106-1) is performed by mixing 20 to 30 parts by weight of phosphorescent pigment with respect to 100 parts by weight of the extrudate pulverized through the extrudate grinding step (S106), and the content of the phosphorescent pigment is 20 parts by weight. If it is less than this, the effect of increasing the phosphorescent retention time of the phosphorescent material is minimal, and if the content of the phosphorescent pigment exceeds 30 parts by weight, the mechanical properties of the phosphorescent material may be reduced.

Since the second extrusion step (S106-2) is carried out in the same manner as described in the extrusion step (S105), its description will be omitted.

Hereinafter, a method for manufacturing a coating agent containing a phosphorescent material with excellent phosphorescence effect according to the present invention and the physical properties of the coating agent manufactured through the method will be described through examples.

<Manufacturing Example 1>

Grind polymethyl methacrylate and mix 70% by weight of polymethylmethacrylate powder with an average particle size of 300 micrometers with 30% by weight of phosphorescent pigment (Tianjin Neutral Self-Luminescent Material Technology Co., Ltd., product name: long after glow phosphor). Then, it was put into an extruder equipped with a twin screw with an L/D ratio of 25:1 or more, and extruded under temperature conditions of 120 to 260°C to produce a phosphorescent material with excellent phosphorescence effect.

<Production Example 2>

Proceeding in the same manner as in Example 1, a phosphorescent material with excellent phosphorescence effect was prepared by mixing 60% by weight of polymethyl methacrylate and 40% by weight of a phosphorescent pigment.

<Production Example 3>

Proceeding in the same manner as in Example 1, a phosphorescent material with excellent phosphorescence effect was prepared by mixing 50% by weight of polymethyl methacrylate and 50% by weight of a phosphorescent pigment.

<Production Example 4>

Proceeding in the same manner as in Example 1, a phosphorescent material with excellent phosphorescent effect was prepared by mixing 40% by weight of polymethyl methacrylate and 60% by weight of a phosphorescent pigment.

<Production Example 5>

Proceeding in the same manner as in Example 1, a phosphorescent material with excellent phosphorescence effect was prepared by mixing 30% by weight of polymethyl methacrylate and 70% by weight of a phosphorescent pigment.

<Production Examples 6 to 13>

The same procedure as in Example 1 was carried out, but the polymethyl methacrylate was pulverized to have an average particle size of 100 to 500 micrometers to prepare a phosphorescent material with excellent phosphorescence effect.

<Comparative Example 1>

Mix 70% by weight of polymethyl methacrylate with 30% by weight of phosphorescent pigment (Tianjin Neutral Self-Luminescent Material Technology Co., Ltd., product name: long after glow phosphor), and place in an extruder equipped with a twin screw with an L/D of 25:1 or more. It was added and extruded under temperature conditions of 120 to 260°C to produce a phosphorescent material.

<Comparative Example 2>

Proceeding in the same manner as in Example 1, a phosphorescent material with excellent phosphorescent effect was prepared by mixing 90% by weight of polymethyl methacrylate and 10% by weight of a phosphorescent pigment.

<Comparative Example 3>

Proceeding in the same manner as in Example 1, a phosphorescent material with excellent phosphorescence effect was prepared by mixing 80% by weight of polymethyl methacrylate and 20% by weight of a phosphorescent pigment.

<Comparative Example 4>

A phosphorescent material was manufactured in the same manner as in Example 1, except that polymethyl methacrylate powder with an average particle size of 550 micrometers was used.

<Comparative Example 5>

In the same manner as in Example 1, a phosphorescent material was manufactured using polymethyl methacrylate powder with an average particle size of 600 micrometers.

The phosphorescence luminance of the phosphorescent materials prepared through Preparation Example 1 and Comparative Example 1 over time was measured and shown in Table 1 below.

{However, the luminance of phosphorescence was measured using Deltaohm's luminance meter HD2102.}

<Table 1>

As shown in Table 1, it can be seen that the phosphorescence effect of the phosphorescent material manufactured through Preparation Example 1 of the present invention is maintained for a long time compared to the phosphorescent material manufactured through Comparative Example 1.

In addition, the phosphorescence duration of the phosphorescent materials prepared through Preparation Examples 1 to 5 and Comparative Examples 1 to 3 of the present invention was measured and shown in Table 2 below.

{However, the phosphorescence duration was measured after irradiating sunlight for 4 hours.}

<Table 2>

As shown in Table 2, the phosphorescent materials prepared through Preparation Examples 1 to 5 of the present invention had excellent phosphorescence duration due to a mixture of 30 to 90% by weight of synthetic resin powder and 10 to 70% by weight of phosphorescent pigment, but Comparative Examples 2 to 2 It can be seen that in 3, the phosphorescence duration is short beyond the above mixing ratio.

In addition, the phosphorescence duration of the phosphorescent materials prepared through Preparation Example 1, Preparation Examples 6 to 13, and Comparative Examples 4 to 5 was measured and shown in Table 3 below.

{However, the phosphorescence duration was measured after irradiating sunlight for 4 hours.}

<Table 3>

As shown in Table 3, the phosphorescent materials manufactured through Preparation Example 1 and Preparation Examples 6 to 13 showed an average particle size of PMMA of 100 to 500 micrometers, and phosphorescence was maintained for a long time, but the phosphorescence materials manufactured through Comparative Examples 4 to 5 It can be seen that the phosphorescence of the phosphorescent material disappears quickly.

<Example 1>

The phosphorescent material with excellent phosphorescent effect prepared through Preparation Example 3 was put into a grinding device and pulverized to a particle size of 0.05 millimeters, and then 200 parts by weight of the pulverized phosphorescent material was mixed with a coating agent (100 parts by weight of non-yellowing acrylic, 37.5 parts by weight, and A coating agent containing a phosphorescent material with excellent phosphorescent effect was prepared by mixing 800 parts by weight of 1-methoxy-2-propanolacetic acid (11 parts by weight) and stirring for 10 minutes at a speed of 150 rpm.

<Example 2>

Proceeding in the same manner as in Example 1, 300 parts by weight of the pulverized phosphorescent material was mixed with 700 parts by weight of the coating agent to prepare a coating containing a phosphorescent material with excellent phosphorescence effect.

<Example 3>

Proceeding in the same manner as in Example 1, 400 parts by weight of the pulverized phosphorescent material was mixed with 600 parts by weight of the coating agent to prepare a coating containing a phosphorescent material with excellent phosphorescent effect.

<Comparative Example 6>

Proceeding in the same manner as in Example 1, a coating agent was prepared by mixing 100 parts by weight of the pulverized phosphorescent material with 900 parts by weight of the coating agent.

<Comparative Example 7>

Proceeding in the same manner as in Example 1, a coating agent was prepared by mixing 500 parts by weight of the pulverized phosphorescent material with 500 parts by weight of the coating agent.

<Comparative Example 8>

Proceeding in the same manner as in Example 1, a coating agent was prepared by mixing 600 parts by weight of the pulverized phosphorescent material with 400 parts by weight of the coating agent.

<Comparative Example 9>

Proceeding in the same manner as in Example 1, a coating agent was prepared by mixing 700 parts by weight of the pulverized phosphorescent material with 300 parts by weight of the coating agent.

<Comparative Example 10>

Proceeding in the same manner as in Example 1, a coating agent was prepared by mixing 800 parts by weight of the pulverized phosphorescent material with 200 parts by weight of the coating agent.

<Comparative Example 11>

Proceeding in the same manner as Example 1, a coating agent was prepared by mixing 900 parts by weight of the pulverized phosphorescent material with 100 parts by weight of the coating agent.

The phosphorescence effect and mixing degree of the coating agents prepared through Examples 1 to 3 and Comparative Examples 6 to 11 were measured and shown in Table 4 below.

{However, the duration of phosphorescence was measured after irradiating sunlight for 4 hours, and the degree of mixing was marked as good if the mixture was evenly mixed by visually checking the mixture. If the phosphorescent material was clumped or the stirring process did not proceed properly, it was marked as bad.}

<Table 4>

As shown in Table 4, the coating agent prepared through Examples 1 to 3 of the present invention has a long phosphorescence time and good mixing, while the coating agent prepared through Comparative Example 6 has a good mixing degree but a short phosphorescence time. , it can be seen that the coatings prepared through Comparative Examples 7 to 11 were not suitable for the stencil method because the phosphorescence time did not exceed 240 minutes, the degree of mixing was low, and the viscosity was too high.

Therefore, the method for manufacturing a coating containing a phosphorescent material with excellent phosphorescent effect according to the present invention not only maintains the phosphorescent effect for a long time because the phosphorescent pigment is evenly dispersed in the synthetic resin and improves phosphorescent efficiency, but also maintains the phosphorescent effect for a long time through a stencil or stamping method. It can be applied to floors and walls of buildings, road signs, road guide reflectors, and hiking decks (stairs/bridges), etc., providing a coating that can realize various designs while ensuring visibility through the phosphorescent effect at night.

S101 ; Synthetic resin grinding stage
S103 ; Raw material mixing stage
S105 ; Extrusion step
S106 ; Extrudate grinding step
S106-1 ; Photoluminescent pigment mixing step
S106-2 ; Second extrusion step
S107 ; Grinding stage
S109 ; Coating mixing step

Claims (8)

A synthetic resin grinding step of pulverizing the synthetic resin to a particle size of 100 to 500 micrometers;
A raw material mixing step of mixing a phosphorescent pigment with the synthetic resin powder produced through the synthetic resin grinding step;
An extrusion step of extruding the mixture prepared through the raw material mixing step;
A pulverizing step of pulverizing the extrudate extruded through the extrusion step; and
It consists of a coating agent mixing step of mixing the pulverized product through the pulverization step with a coating agent,
The coating agent mixing step is performed by mixing 150 to 400 parts by weight of the coating agent with 100 parts by weight of the pulverized material pulverized through the pulverizing step,
The coating agent consists of 100 parts by weight of non-yellowing acrylic, 30 to 45 parts by weight of xylene, and 7.5 to 15 parts by weight of 1-methoxy-2-propanol acetic acid,
Between the extrusion step and the pulverizing step, an extrudate pulverizing step of pulverizing the extrudate extruded through the extrusion step;
A phosphorescent pigment mixing step of mixing a luminescent pigment with the extrudate pulverized through the extrudate grinding step; and
A second extrusion step of extruding the mixture prepared through the phosphorescent pigment mixing step is further performed,
The extrudate grinding step is performed by cutting the extrudate extruded through the extrusion step into a length of 3 to 4 millimeters, cooling it, and processing it into pellets, then putting it into a grinder and pulverizing it to a particle size of 100 to 500 micrometers. ,
The phosphorescent pigment mixing step is a method of producing a coating agent containing a phosphorescent material with excellent phosphorescent effect, characterized in that the phosphorescent pigment mixing step is performed by mixing 20 to 30 parts by weight of the phosphorescent pigment with 100 parts by weight of the extrudate pulverized through the extrudate grinding step.
In claim 1,
A method for producing a coating containing a phosphorescent material with excellent phosphorescent effect, characterized in that the synthetic resin is made of one selected from the group consisting of low-density polyethylene, polyethylene terephthalate, polymethyl methacrylate, and polycarbonate.
In claim 2,
A method for producing a coating agent containing a phosphorescent material with excellent phosphorescent effect, characterized in that the synthetic resin is made of polymethyl methacrylate.
In claim 1,
The raw material mixing step is a method of producing a coating agent containing a phosphorescent material with excellent phosphorescent effect, characterized in that it is achieved by mixing 30 to 90% by weight of the synthetic resin powder prepared through the synthetic resin grinding step and 10 to 70% by weight of the phosphorescent pigment.
In claim 1,
The extrusion step is a method of producing a coating agent containing a phosphorescent material with excellent phosphorescence effect, characterized in that the extruder is equipped with a twin screw with an L / D of 25:1 or more.
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